212542025042 has 4 divisors (see below), whose sum is σ = 318813037566. Its totient is φ = 106271012520.

The previous prime is 212542025029. The next prime is 212542025083. The reversal of 212542025042 is 240520245212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 176703370321 + 35838654721 = 420361^2 + 189311^2 .

It is a super-2 number, since 2×212542025042² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212542024996 and 212542025014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53135506259 + ... + 53135506262.

Almost surely, 2^212542025042 is an apocalyptic number.

212542025042 is a deficient number, since it is larger than the sum of its proper divisors (106271012524).

212542025042 is a wasteful number, since it uses less digits than its factorization.

212542025042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106271012523.

The product of its (nonzero) digits is 12800, while the sum is 29.

The spelling of 212542025042 in words is "two hundred twelve billion, five hundred forty-two million, twenty-five thousand, forty-two".